Undelete overwritten files is a term used when trying to recover files or previous versions that have been overwritten with new data. Overwriting involves replacing the old data with the new one, hence making it hard to retrieve compared to regular file deletion. In case your original file was deleted while being overwritten, you can start by checking the Recycle Bin. File History, Previous Versions, and cloud storage history can also come in handy. For example, you can access the version history of the file if it is located in OneDrive. If the file in question is in Mac, then you should check Time Machine or the file history from the program used to make the file. If no previous version is available, data recovery programs may prove useful in case some old data is still on the hard disk. Notchox is an example of data recovery software.